Combined type-writing and computing machine.



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COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APRJQ. 1912.

1,2243 1 4. Patented May 1, 1917.

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COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR. 19, 1912.

1,224,314. Patented May1,1917.

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COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APII. I9, I912.

Patented Mayl, 1917.

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COMBINED TYPE WRITING AND COMPUTHJG MACHINE.

APPLICATION FILED APR. 19. 1912.

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UNITED srarns PATENT onnron.

OSMOND W. OLMSTED, OF HARTFORD, CONNECTICUT, ASSIGNOR,- ,"BY MESNE ASSIGN- MENTS, TO UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. Y., A

' CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented May 1, 1917.

Application fi1ed April 19, 1912. Serial No. 691,828.

To all whom it may concern:

Be it known that I, OSMOND IV. OLMSTED, a citizen of the United States, residing in Hartford, in the county of Hartford and State Of Connecticut, have invented certain new and useful Improvements in Combined Type-VVriting and Computing Machines, of whichthe following is a specification.

This invention relates to combined typewriting and computing machines, of the class in which numeral keys on the typewriter are caused to set certain pins in the computing mechanism, which are subsequently employed for rotating the computing wheels.

These computing pins are usually placed upon horizontal bars or racks which drive the computing wheels. Heretoforc the bars have been below the key-operated pin setters, and the typewriter carriage has been caused to lift the bars one by one to bring the pins within range of the pin-setters. Considerable extent of movement of the pin-carrying bars has been required for this purpose, thus making a heavy demand upon the power of the paper carriage of the typewriter, and having a tendency to reduce the speed of operation of said carriage. Moreover, the pincarrying bar was held in its upper position by means of the carriage during the setting of the pin; and since a long train of mechanism was employed between the bar and the carriage, there was liability of yield ing on the part of said train during the depression of a pin on the bar, so that it was necessary to provide a relatively powerful cam to be operated repeatedly by the carriage at the step by step movements thereof, in order to insure that the pin-carrying bars should perform their proper functions at the pin-setting operations.

One of the principal objects of the present invention is to improve the machine with a view of decreasing the demand upon the power of the typewriter carriage, and of increasing the speed and certainty of operation of all the mechanism, including the car riage.

Formerly the pins were located directly under the key-operated pin-setters; but according to the present improvements, the pins are placed to one side of the setters, so

that any setter when depressed may pass idly between the pins without setting any thereof.

The pin-carrying barmight have an upand down-movement as in prior cases, but is preferably capable of moving only in a longitudinal direction. A very slight forward movement of any bar brings the pins thereon into position to be engaged and depressed by any of the pin-setters. This slight advance motion of the pin-carrying or computation bar is easily effected by the carriage through a simple connection. and very little power needs to be exerted by the carriage in displacing any bar. The computation bars are all positively supported in fixed guides against the action or pressure of the pin-setters when depressing the pins, so that no power is demanded from the carriage for this purpose.

These computation racks are thus advanced through the instrumentality of a set of denominational members, selector bars, rods or jacks, which are operable by a dog or tappet which is mounted on the typewriter carriage; and one of the features of the present improvements resides in mounting said dog upon a tabulating stop, so that when the tabulating mechanism is used for the purpose of setting the typewriting carriage the latter will not only be arrested at the proper point to begin writing in the column, but the corresponding computation rack will also be advanced, ready to have any pin thereon depressed by the key which is employed to write a figure at any point in the column.

Provision is also madefor silencing the selector rods or jacks which set the computation racks, these silencing means being operated whenever the typewriter platen is shifted for upper case characters, and also preferably whenever any tabulating key is depressed, and also when the ordinary backspacing key is used.

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a sectional side elevation of an Underwood-Hanson combined typewriting and computing machine embodying my present irnpr ov,ements Fig. 2 is a detail view which is to be read in connection with Fig. 1, as it illustrates the letterfeeding mechanism of the typewriting machine.

\Fig. 3 is a sectional plan of the lower ends of the jacks or rods which are employed for advancing or displacing the computation bars.

Fig. 1 is a rear perspective View of the tabulating platen-shifting and computing mechanisms, omitting certain parts.

Fig. 5 is a perspective view of the device effective at the punctuation spaces in a column to prevent the writing of figures.

Fig. 6 is a rear elevation of the machine.

Fig. 7 is a sectional side elevation to illustrate a computation pin being depressed by the pin setter.

Fig. 8 is a similar view showing the normal positions of the parts, and illustrating how a pin-setting bar may be depressed idly between the pins.

Fig. 9 is a view similar to Fig. 7, but showing the parts before a key is operated to depress a pin-setting bar.

Fig. 1.0 is a rear elevation, to illustrate the computation dog slipping over the selector rods or jacks during the return movement of the typewriter carriage.

Fig. 11 illustrates the manner in which the tabulating mechanism silences the computa tion jacks.

Fig. 12 illustrates the manner in which the back-spacing mechanism silences said jacks.

The typewriter comprises numeral keys 1 (Fig. 1) and alphabet keys 2, which depress levers 3 to vibrate bell cranks 4, the latter engaging type bars 5 to swing them up to strike against a platen 6 whic is mounted on a carriage 7. The carriage is driven by a spring barrel 8. The letter-feeding movements of the carriage are controlled by a rack 9, meshing with a pinion 10 connected to an escapement wheel 11, whose movements are controlled by dogs 12; said dogs operated by a universal bar 13, which is actuated by heels 14: on the type bars.

The numeral keys have stems 15, to enga e and depress arms 16 on rock shafts 1%. These shafts form parts of linkages, each linkage comprising a bell crank 18 (Fig. 41-) on said rock-shaft, a companion bell crank 19, a horizontal transverse link 20 connecting the upstanding arms on said bell cranks, and a universal bar 21 for depressing or setting the computation pins.

The computation pins designated as 22, are mounted in rows upon bars 23 extending forwardly and rearwardly under said linkages, and having at their forward ends racks 24 to engage pinions 25 on computation wheels 26. The number of computation pins 22 on each bar or rack is equal to the number of the universal pin setters 21; but these pins 22 are normally at one side or out of the paths of said pin-setters, as seen in Fig. 1, so that when any key 1 is operated, the pin-setter may move down between the pins, without setting any of them (see Fig. 8).

The typewriter carriage 7 is equipped to advance the computation racks or bars23 scriatim, so that when said carriage is in position for writing at any point in a column, the computation bar of the corresponding dcnomination will be advanced, 7 and 9, and when a numeral. key is depressed to write at said point in the column, the universal setter 21 that is connected to said key, will. depress that particular pin 22 on the advanced bar which corresponds to such depressed key. The depressed pins are utilized for turning the computation wheels 26; and before explaining the connections he tween the pin-carrying bars and the type writer carriage 7, the principal parts of the wheel-turning mechanism will he pointer out.

This wheel-turning mechanism is driven by a general operator, which may con'lprise a handle 27 (Fig. 1) connected to a shaft 28, having at its ends a pair of segn'ients 29 meshing with idle pinions 30, the latter meshing with racks 31 guided on the opposite sides of the machine. Each rack has an off-set arm 32; and these arms or racks are rigidly connected by rear and forward cross bars 33 and 33, beneath the computation bars 23, so that when any pins 22 are depressed, the rear cross bar 33 may, when driven forwardly by handle 27, engage the depressed pins 22, and carry their bars 23 forwardly, so that the racks 24; may drive the wheels 26 each to an extent dependent upon the pin depressed. Upon the return of the handle 27 of the general operator, the forward cross bar 33 engages shoulders 34- upon said computation bars, to return them rearwardly to normal positions.

The adjustment or setting forward of the bars 23 to bring their pins into register with the pin setter, is efiected by the letter-feeding carriage 7 of the typewriter. Upon the rear of the carriage is mounted a dog 35, to engage the beveled upper ends 36 of a series of upstanding selector bars or rods 37, to depress them one after another as the carriage feeds; said rods at their upper ends being disposed at letter space interwals.

At their lower ends, the rods or bars 37 bear down upon horizontal arms 33 of a set of bell-cranks, which'are fulcrumed upon a cross rod or shaft 39, and have arms 10 depending in rear of the computation bars 23, to thrust the latter forwardly. When the carriage 7 is brought to position to write at any point in a column, the corresponding rod 37 will be depressed and held down during such writing, that is, until a numeral rev 1 is depressed and released, and the carriage is fed to the next point or place in said column. As long as any rod 37 is held down, its bell-crank 3840 is held in abnormal position, and the associated computation bar 23 is held in a slightly advanced position, as at Figs 7 and 9, so that the numeral key which is being depressed may operate its universal pin setter 21, as at Fig. 7, to thrust down or project a computation pin 22 into the path of the cross-bar 33 of the general operator. When the carriage feeds past this point and the rod 37 is released, a spring 41, hearing against a shoulder 42 upon a computation bar 23, thrusts said bar to normal position, thus vibrating the bell cranks 38-40 and raising the rod 37 to normal position. At the same time the succeeding rod 37 is depressed, to advance the next computation bar 23 to register its pins with the pin setters.

It will be noted by reference to Fig. 9, that the back-and-forth shifting of each denominational bar 23 in adjusting the pins 22 with respect to the setters or setting linkages 21, can be accomplished without disturbing the dial or computing wheels 26. That is to say, each gear 25 drives the associated computing wheel 26 solely in one direction by means of a ratchet wheel 25 on the gear 25 engaging a spring-pressed pawl 26 on the computing wheel. When any particular denominational bar 23 is in its rearmost position, with its pins 22 out of line with the pin setters 21 8), then there will be a slight amount of back lash, space, or lost motion between the ratchet wheel 25" and the pawl 26, as illustrated in Fig. 9. This, then, enables each denominational rack bar 23 to be advanced against the tension of its spring L1, to such a position that the pins 22 thereon will lie subjacent the linka es 21 without disturbing the associated computing wheel 26, as the ratchet wheel 25 will merely move up to contact with the pawl 26 taking p the space between this pawl and the nearest tooth of the ratchet wheel 25 The movement of the bar 23 effected by the dog 35 is therefore very slight and but ittle force is required therefor, and hence the paper carriage is not appreciably retarded, thus conducing to speed and certainty of operation of mechanism. Moreover, the computation bar 23, which does not have to be raised and lowered, as heretofore, may be provided with positive upper and lower supports 43, 44. for its rear end, and the usual fixed support 45 for its front end, so that there is no liability of yielding or springing at the pin-setting operation, and hence the pins may be set easily, readily, and with certainty, without making necessary a strong cam connection to the carriage to sustain the bar and its rack while the pin on the bar is being depressed. Thus the work to be performed by the carriage is reduced to a minimum, which is a desideratum.

Back of theshoulder l2 on the bar 23 is a level or dead edge d6, on which the tip of spring ll may ride while the bar is being carried forwardly and backwardly by the general operator At the completionof the return stroke of the general operator, the spring ll will snap down over the shoulder -il2 formed on said bars 23.

Between their ends the selecting rods 37 are provided with bends e whereby each of the rods crosses all the others, so that the denominational, order of the rods at their lower ends is the reverse of the order at their upper ends. The bent portion of each rod extends not only diagonally as at Fig. 6, but also baclm'ardly and forwardly, as at Fig. 1, so that the rods may clear one another, to permit any rod to be operated without affecting any other rod. The set of rods forms a transposition device between the do and the bell cranks 3840.

The rack-setting dog 35 of the carriage is preferably mounted upon a column stop 4.7, which, as usual, is adjustable along a rack 4, lined upon the carriage 7, and forming part of a tabulating mechanism. There are usually provided several of the stops 4-7, and each is adjustable independently of the others along the rack 48. As many of the steps may be provided with dogs 35 as desired, so that the computing wheels 26 may be operated repeatedly during the writing of each line, and of course, column stops l7 may be added which are unprovided with dogs 35.

It will be seen that the machine is provided with the 'usual tabulating keys d9, on the forward ends of levers 50, which are fulcrumed at 51, and at their rear ends articulated at with lower ends of decimal or denominational stops 53, whereby any of said denominational stops may be thrust up to intercept any of the column stops 47, to arrest the carriage at the tabulating operation, in the usual manner.

As usual in the Underwood machine, the denominational steps have shoulders 54, to lift one end of a lover or bar to the other end of which is connected a link 5o, whereby is rocked lever 57, having on its forward end a roll 58, to lift the carriage rack 9 from the escapement pinion 10, so that the carriage may run freely at the tabulating operation.

At the operation of tabnlating it is desirable to effect separation of the deg 35 and rods 37, to prevent injury thereto, and for this purpose each of the den .ninational steps 53 is provided with a shoulder 60, Fig. 4:, these shoulders being in line, and taking under a horizontal universal rod 61, which at its ends is connected by means of downwardly extending arms 62 to apair of rock arms 68, fixed upon a shaft 6%, and form-ed with forward extensions or arms 64:, to bear down the fulcrum rod or shaft 39, upon which the bell-cranks 38, -10 are fulcrumed; so that said bell-cranks may drop bodily, together with the rods 37, to get the latter out of the path of dog 35. This happens whenever any tabulating key 49 is depressed; and upon relieving of said key from pressure, springs 65 lift the fulcrum rod 39, together with the bell cranks, and restore the selector rods 37 to their normal upper positions. If, however, the dog 35 should overlie one of the rods or jacks 37 at this time, such rod will not rise, and hence its associated computation bar 23 will advance during the return of the bell crank sna ft 39 to normal position. Hence, notwithstanding the fact that the actuated tabulator key silences the rods or jacks 37, still it is true that upon the release of said key, the corresponding rod or jack becomes effective, and the corresponding computz-rtion bar 23 is advanced.

in the Underwood. machine, the platen (i is shifted upwardly when writing capital letters; a shift key 66 being operated to press down a lever 67, which is fulcrumed at 68 and has an upstanding arm 59, to swing forwardly an arm 70, which forms part of a frame that is hinged to turn about the axis of a rocker 71; said frame carrying at its forward portion a rail 72 to engage and lift a roll 73, which supports frame 74, in which the platen 6 is journaled; the frame being carried on swinging arms 75, so that the platen and frame may be raised independently of the carriage 7.

From the rocker 71 extends rearwardly an arm 76, which is depressed when the platen rises; and from this arm depends a link 77, which rocks a lever 7 8, causing the latter to thrust up a link 79, which at its upper end is forked at to bestride the end of said universal rod 61. Through this connection, the links 62 are drawn up, to rock the frame 63, 6%, 6 k and depress the fulcrum rod 39, with the bell cranks thereon and the rack-setting rods 37, allowing the latter to fall down out of the path of the dog or dogs 35.

It will be understood that each type bar 5 carries a lower-case type 81 and an uppercase type 82. The figure types are placed on the lower-case shift; and the types 82 on the figure type bars usually consist of signs and characters, so that no computation needs to be done while said signs or characters are being printed, and hence the computing mechanism is temporarily disabled by the shift key 66 in the manner just described.

At Fig. 10 is shown clearly the manner in which a dog 35 is mounted on a column stop 47; said dog being pivoted at 83 to an extension on said step, and being held in normal working position by a spring 84-. This spring permits the dog to yield when the carriage is being returned to begin a new line of writing, as illustrated in Fig. 10. By reason of the pivoting of the dog, it is found preferable to silence the rods 37 when the carriage is being spaced backwardly a single step by the usual back-spacing key It will be understood that the necessary lest motion of the carriage, due to the pivoting of the dog 35, would require the dog to be carried back entirely beyond the range of the array of rods 37 before the dog could recover itself, and to avoid this difliculty, a connection is made to the back-spacing mechanism, such that the rods 37 are withdrawn by the back-spacer. The backspacing key 85 (Figs. 1 and 12) depresses a lever 86, to pull down a link 87, which in the usual manner swings a dog 88 into mesh with the teeth of rack 9, and pulls the carriage back a distance of a letter-space; the parts operating and returning to normal positions, as set forth in the United States Patent to idol mend No. 930,962, dated August 10, 1909. Upon a rock-shaft 89, to which the rear end of the lever 86 is secured, is fixed a rear wardly extending arm 90, which takes under a lug 91 secured on one of the rods 62, to lift said rod and rock the rocker fran e (33, (3 :1 64 and depress the fulcrum bar 39, together with the bell-cranks and the rods 37, thereby silencing said rods; the springs 65, of course, restoring the parts after the back spacer key 85 is released.

- In said Underwood typewriting and computing machine, it is customary to prevent a simultaneous depression of two of the numeral keys 1, by means of a system of blocking tumblers 92; each key stem 15 having an offset stem 93, and there being room between the tumblers for only one stem to pass down, whereby the others are locked against descent.

Mechanism is usually also employed in said machine to prevent any numeral key from being operated when the paper carriage 7 is making a space between millions and hundreds of thousands, or between thousands and hundreds, or between units and tenths. This mechanism usually comprises a bell-crank 9 1, having an arm to pass up into engagement with the tumblers, and to crowd them together 'so there will be no space for any stem 93 to enter. Usually there are two or three of the bell-cranks 94; but according to one feature of the present improvements, only a single bell-crank needs to be employed, and this may be connected by a rearwardly extending link 95 to a lever 96, pivoted at 97 and having a horizontal cross-arm 98, Fig. 5, extending in front of arms 99 of a pair of bell cranks, each of which comprises a rearwardly extending arm 38, these arms 38, which correspond with the similarly-designated arms of the bell cranks 38, 40, being operable by rods 100 corresponding with the rods 37, so that the carriage when passing from millions to hundred-thousands or from thousands to hundreds, for instance, may operate one of the bell-cranks 38, 99, to lock the numeral keys against actuation, without, however, lock ing the alphabet keys and punctuation keys, so that it is possible to write a comma or a period in this space on the work sheet. It will be understood that the special bellcranks 38, 99, are raised and lowered together with the remaining bell-cranks 38, 10, in the manner already explained, when it is desired to silence the rods.

At their lower ends the rods 37 and 100 may be guided in a comb 101, seen in plan at Fig. 3; each rod having a head 102, which is cut away between its ends on each side at 103,' whereby the head is thinned to pass between the teeth 10a of the comb. A securing bar 105 may be fastened to the ends of the comb, and the latter may be secured to the frame work of the typewriter by hangers 106. This comb not only guides' the rods but also secures them from dropping out of the machine, when the typewriting machine is lifted off from the adding machine base 107 in the usual manner. Beneath the arms 38 of the bell-cranks may be placed a fixed guard support 108 (Fig. 1) to support the arms 38 when the rack bars 23 are driven forward by the general operator.

Variations may be resorted within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, 1 claim:

1. The combination of a letter-feeding carriage, a set of computation wheels, a system of settable pins arrayed in rows, one row for each wheel, a set of pin setters, each pinsetter universal to all the rows of pins, keys for operating the pin-setters, all the pins normally escaping the pin-setters, and means operable by said carriage for moving each row of pins in a direction longitudinal of the row to advance the said row to a position where the pins are engageable by all the pin-setters.

2. The combination of a carriage, a set of computation Wheels, a set of bars to operate said wheels, rows of pins mounted on said bars, key operated setters for the pins, and means enabling said carriage to positively displace the bars endwise successively, to bring all the pins on each bar into position to be operated by any pin-setter.

3. The combination of a carriage, a set of computation wheels, set of bars to operate said Wheels, indexing pins mounted on said bars, key-operated setters for the indexing devices, said bars extending forwardly and rearwardly of the machine, a set of arms mounted upon the machine to swing forwardly and rearwardly, said bars engage able by said arms, and means enabling said carriage to swing said arms one after another as the carriage travels in letter-feeding direction, to displace the bars and the indexing devices thereon to settable positions.

1. The combination of a. carriage, a set of computation wheels, a set of bars to operate said wheels, indexing pins mounted on said bars, key-operated setters for the indexing devices, said bars extending forwardly and rearwardly of the machine, a set of arms mounted upon the machine to swing forwardly and rearwardly, said bars engage bars, key-operated setters for the indexing devices, said bars extending forwardly and rearwardly of the machine, a set of arms mounted upon the machine to swing forwardly and rearwardly, said bars engage able by said arms, means operable by said carriage for swinging said arms one after another as the carriage travels in letterfeeding direction, to displace or advance the bars and the indexing devices thereon to settable positions, a general operator, and bar returning springs mounted to yield to permit the bars to'be advanced by the general operator; the bars having dead edges or surfaces upon which the springs may ride during the advance and return of the bars by the general operator.

6. The combination of numeral keys, a letter-feeding carriage, computation wheels, bars to cooperate with said computation wheels, indexing devices on said bars to be set by said keys to determine the extent of rotation of said wheels, devices directly engaging said bars for displacing the same to bring their indexing devices to positions to be set by said keys, a set of rods connected at their lower ends to said displacing devices, and a dog on said carriage to engage the upper ends of said rods to depress the same.

7. The combination of numeral keys, a letter-feeding carriage, computation wheels, bars' to cooperate with said computation wheels, indexing devices on said bars to be set by said keys to determine the extent of rotation of said wheels, a set of bell cranks directly engaging said bars for displacing the same, a set of rods connected at their lower ends to said bell-cranks, and a dog on said carriage to engage the upper ends of said rods to depress the same.

8. The combination of numeral keys, a letter-feeding carriage, computation wheels, bars to cooperate with said computation wheels, indexing devices on said bars to be set by said keys to determine the extent of rotation of said wheels, devices for displacing the bars to bring their indexing devices to positions to be set by said keys, a

set of rods connected at their lower ends to said displacing devices, and a dog on said carriage to engage the upper ends of said rods to depress the same, said rods crossing one another between their ends, so that their lower ends are arranged in inverted order with respect to their upper ends.

9. The combination of a set of computation'bars each having key-set indexing devices, a letter-feeding carriage, tabulating mechanism for said carriage including a stop adjustable along thecarriage, column stops on the framework; said carriagestop provided with a dog; and a set of jacks engageable by said dog and connected to set said bars.

10. The combination of a set of compu- ,tation bars each having key-set indexing devices, a letter-feeding carriage, tabulating mechanism for said carriage including stops adjustablealong the carriage, column stops on the framework; certain of said carriagestops provided with pivoted dogs, and a set of jacks engageable scm'azf'im by any of said dogs, whereby when the carriage stops are adjusted to positions for tabulating the writing, the computing mechanism will be positioned for action at corresponding points in the line of writing.

11. The combination of a series of typeoperating numeral keys, a letter-feeding typewriter carriage controlled by said keys, a set of computation wheels, a set of racks for said wheels, pins on said racks, a system of pin-setters connected to the keys, bell cranks to shift the racks endwise to bring the pins thereon into the paths of the pinsetters, said bell cranks mounted at the rear ends of the racks and having rearwardly extending arms, a set of crossed rods at their lower ends engaging said arms, a tabulating mechanism for said carriage including stops upon the machine frame, a counter-stop adjustable along said carriage, and a dog on said counterstop to engage the upper ends of said rods to set the racks.

12. The combination with a carriage, of a dog thereon, a series of jacks at letterspace intervals movable by said dog, rows of key-set indexing devices movable by said jacks, computation wheels, and means for shifting said jacks out of the path of said dog.

3. The combination of numeral keys, :1 letter-feeding carriage, computation wheels, bars to cooperate with said computation wheels, indexing devices on said bars to be set by said keys to determine the extent of rotation of said wheels, devices for displacing the bars to bring their indexing devices to positions to be set by said keys, a set of rods connected at their lower ends to said displacing devices, a dog on said carriage to engage the upper ends of said rods to depress the same and means for shifting said. rods out of the path of said carriage dog.

14:. In a combined typewriting and computing mechanism, the combination of numeral keys, a letter-feeding carriage controlled by said keys, a tabulating mechanism for said carriage, a set of computation wheels, a set of computation bars to cooperate with said wheels, indexing devices upon said bars to be set by said keys, a dog upon said carriage, a set of jacks operable successively by said dog, means to enable the jacks to displace the computation bars to enable the keys to set the indexing devices thereon, and means operable by said tabulating mechanism to shift said jacks out of the path of said carriage dog.

15. In a combined typewriting and computing mechanism, the combination of numeral keys, a letter feeding carriage controlled by said keys, a case-shifting mechanism, a set of computation wheels, a set of computation bars to cooperate with said wheels, indexing devices upon said bars to be set by said keys, a dog upon said carriage, a set of jacks operable successively by said dog, means to enable the jacks to displace the computation bars to enable the Keys to set the indexing devices thereon, means operable by said case-shifting mecha nism to shift said jacks out of the path of said carriage dog, and means independent of said case-shifting mechanism for shifting said jacks out of the path of said dog. 7

16. In a combined typewriting and computing mechanism, the combination of numeral keys, a letter-feeding carriage controlled by said keys, a backspacing mechanism for said carriage, a set of computation wheels, a set of computation bars to cooperate with said wheels, indexing devices upon said bars to be set by said keys, a dog upon said carriage, a set of jacks operable successively by said dog, means to enable the jacks to displace the computation bars to enable the keys to set the indexing devices thereon, and means operable by said spacing mechanism to shift said jacks out of the path of said carriage dog.

17. In a combined typewriting and com- Cir puting mechanism, the combination of numeral keys, a letter-feeding carriage controlled by said keys, a tabulating mechanism, a case-shifting mechanism, a back spacing mechanism for said carriage, a set of computation wheels, a set of computation bars to cooperate with said wheels, indexing devices upon said bars to be set by said keys, a dog upon said carriage, a set of jacks operable successively by said dog, means to enable the jacks to displace the computation bars to enable the keys to set the indexing devices thereon, and means operable by said tabulating mechanism, said case-shifting mechanism and said back-spacing mechanism to shift said acks out of the path of said carriage dog.

18. The combination of numeral keys, a letter-feeding carriage, computation wheels, bars to cooperate with said computation wheels, indexing devices on said bars to be set by said keys to determine the extent of rotation of said wheels, a set ofbell cranks for displacing said bars, a set of rods connected at their lower ends to said bell cranks, a dog on said carriage to engage the upper ends of said rods to depress the same, a support for said bell cranks, and means for dropping said support so as to withdraw said rods from the path of the carriage dog.

19. The combination of a carriage, a dog on said carriage, computation wheels, racks to drive said wheels, indexing devices on said racks, key-operated setters for said indexing devices, a set of jacks in the form of rods engageable at their upper ends by said carriage dog, and crossing one another between their ends, so that the denominational order of their lower ends is the reverse of the order of their upper ends, bell-cranks engaged by said jacks at their lower ends, said racks being displaceable by said bellcranks, a support for said bell cranks, a tabulating mechanism, and means connected to said tabulating mechanism for lowering said support to withdraw said jacks from the path of said carriage dog.

20. The combination of a carriage, a dog on said carriage, computation wheels, racks to drive said wheels, indexing devices on said racks, key-operated setters for said indexing devices, a set of jacks in the form of rods engageable at their upper ends by said carriage dog, bell cranks engaged by said jacks at their lower ends, said racks being operable by said bell cranks, a support for said bell cranks, a case-shifting mechanism, and means connected to said case-shifting mechanism for lowering said support to withdraw said jacks from the path of said carriage dog.

21. The combination of numeral keys, a letter-feeding carriage, computation wheels, bars to co6perate with said computation wheels, indexing devices on said bars to be set by said keys to determine the extent of rotation of said wheels, devices for displacing the bars to bring their indexing devices to positions to be set by said keys, a set of rods connected at their lower ends to said displacing devices, a dog on said carriage to engage the upper ends of said rods to depress the same, a key separate from said numeral keys, and means connected to the last-named key for shifting said rods out of the path of said carriage dog.

22. In a combined typewriting and computing mechanism, the combination of numeral keys, a letter-feeding carriage controlled by said keys, a tabulating mechanism for said carriage, a set of computation wheels, a set of computation bars to cooperate with said wheels, indexing devices upon said bars to be set by said keys, a dog upon said carriage, a set of jacks operable successively by said dog, means to enable the jacks to displace the computation bars to enable the keys to set the indexing devices thereon, said tabulating mechanism including a series of key-operated stops, a universal bar operable by or with any of said stops, a pair of rock arms, links connecting said universal bar to said rock arms, and means controlled by said rock arms for disabling said jacks.

23. The combination of a series of typeoperating numeral keys, a letter-feeding typewriter carriage, controlled by said keys, set of computation wheels, a set of racks for said wheels, indexing devices on said racks, a system of setters for said indexing devices connected to the keys, bell cranks to shift the racks endwise to bring the indexing devices thereon into the paths or" the setters, said bell cranks mounted at the rear ends of the racks and having rearwardly extending arms, a set of crossed rods having their lower ends engaging said arms, a tabulating mechanism for said carriage including stops upon the machine frame, a counter-stop adjustable along saidcarriage, a dog on said counter-stop to engage the upper ends of said-rods to set the racks, a general operator to engage the pins set on said racks to turn the computation wheels, a shaft upon which said bell cranks are fulcrumed, means engaging said shaft to displace the same to shift said rods out of the path of said dog, and means to restore said shaft and said bell cranks.

24c. The combination of numeral keys, a letter-feeding carriage, computation wheels, bars to cooperate with said computation wheels, indexing devices on said bars to be set by said keys, devices for displacing the bars to bring their indexing devices to positions to be set by said keys, a set of rods connected at their lower ends to said displacing devices, a dog on said carriage to engage the upper ends of said rods to depress the same, a general operator to cooperate with said indexing devices to advance the computation wheels, a case shifting mechanism including a rock shaft, an arm on said rock shaft, a lever connected to said arm, and means operated by said lever to shift said rods out of the path of said carriage dog.

25. In a. combined typewriting and com puting mechanism, the combination of numeral keys, a letter-feeding carriage controlled by said keys, a back-spacing mechanism for said carriage, a set of computation wheels, a set of computation bars to cooperate with said wheels, indexing devices upon said bars to be set by said keys, a dog upon said carriage, a set of jacks operable successively by said dog, means to enable the jacks to displace the computation bars to enable the keys to set the indexing devices thereon, and means operable by said backspacing mechanism to shift said jacks out of the path of said carriage dog, said shiftin means including a rock shaft, an arm on said rock shaft, a link having a part engag able by said arm, and a rocking frame connected to said link and including means to displace said jaeleoperated bar-displacing means.

26. The combination with a set of computing wheels, of a system of pins arranged in rows, settable to determine the extent of rotation of the computing wheels, one row of pins for each wheel, a set of pin-setters, each pin-setter universal to all the rows of pins, keys for operating the pin-setters, all of the pins normally escaping the pinsetters, means for moving each row of pins in a direction longitudinally of the rows to advance the said rows to a position where the pins'are engageable by all the pinsetters, and a general operator to engage with the set pins in the advanced position of the rows to move the rows of set pins, and thus determine the extent of rotation of the computing wheels, there being lost motion between the general operator and the adjacent pins, enabling said longitudinal movement of a row of pins.

27. The combination with a computationindexing mechanism including settable members adapted to afford-a temporary representation of a computation, and also including carriers for said settable members, of setting means for said members, said setting means and said settable members being normally out of alinement with each other,'so that the former is incapable of actuating the latter, means for bringing about the alinement of individual settable members with said setting means, driving means for said carriers, there being lost motion between said driving means and said carriers enabling said alinement between said settable members and said setting means, and registering mechanism driven by said carriers.

28. The combination with a typewriting mechanism including a traveling carriage, of tabulating mechanism for determining the position of said carriage, computationindexing mechanism for affording a temporary representation of a computation, set ting means for said computation-indexiug mechanism adapted to set up a computation therein, said setting means and said computation-indexing mechanism being normally out of effective register with each other, so that actions of said setting means will be normally idle, means for bringing about an effective registering of said setting means and said computation-indexing mechanism with each other, and means for preventing said registering while tabulating with said tabulating mechanism.

29. The combination with a typewriting mechanism including numeral keys and a case-shifting mechanism to determine the change between upper and lower case characters, of a computation accumulating mechanism, setting means for setting up a preliminary representation. of a computation in said computation-accumulat ing mechanism, said setting means and said computation-accumulating mechanism bein normally out of effective register with each other, means for bringing about an effective registering between said setting means and said computation-accumulating mechanism so that the former may actuate the parts of the latter to set up a computation therein, and means for inhibiting the said registering during the action of said caseshifting mechanism to write characters'other than numerals.

30. The combination with a typewriting mechanism including a traveling carriage, of a computing mechanism including a series of denominational or order members, a series of selector members operable from said carriage and connected to actuate said denominational or order members in the order corresponding to that in which the numerals are written by the typewriting mechanism, guiding and supporting means for said selector members, and shifting means for bodily moving said selector members on their supporting and guiding means to a position free from control by said carriage.

81. The combination with a typewriting mechanism, of a computing mechanism including a denomination-determining mechanism, a series of selectors movable individually said typewriting mechanism to determine the action of said denomination-determining mechanism, and means for movlng said selectors concomitantly .to render said denomination-determining mechanism free from control by said typewriting mechanism.

32. The combination with a typewriting mechanism, of a computing mechanism, and a series of selector rods forming a connecting means between said typewriting mechanism and said computing mechanism so as to enable the digits of a number to be computed by said computing mechanism in the same denominational order as written by said typewriting mechanism, said rods having their opposite ends arranged in different parallel lines with one set of ends located the same successive distances from one end of their line which the other ends occupy with respect to the opposite end of their line, and being bent intermediate their ends, so that the arrangement of the rod ends in one of such lines is the reverse of that in the other line.

-38. The combination with a typewriting mechanism including a carriage, of a computing mechanism, and a series of selector rods connecting said typewriting mechanism with said computing mechanism, said selector rods being actuated under control of the carriage of said typewriting mechanism, so as to actuate certain parts of said computing mechanism, said selector rods being bent intermediate their ends, so that one end of each rod will occupy a position located at the same distance from an imaginary line drawn midway of the set of rods, that the other end occupies on the opposite side of the same line.

34. A computing selector wire having end reaches parallel to each other with an intermediate reach connecting the end reaches diagonally arranged.

35. In a computing mechanism, a selector rod having two reaches extending in substantial parallel relation with respect to each other and connected by an intermediate diagonal reach.

36. The combination with a typewriting mechanism, of a computing mechanism, and a series of selector rods connecting said typewriting mechanism with said computing mechanism so that the former may control actions of the latter, said selector rods each comprising a pair of parallelly-extending reaches connected by a diagonally-extending reach, the diagonally-extending reaches varying in magnitudes from those rods located at the outside of the series to those located in the midst of the series.

37. The combination with a typewriting mechanism, of a computing mechanism, and a series of selector rods connecting said typewriting mechanism with said computing mechanism so that actions of the latter may be controlled from the former, each of said selector rods including a wire bent and twisted intermediate its ends, so as to cross all of the other wires and thereby invert the order of succession of the rods at one end from that at the other end.

38. The combination with a typewriting mechanism, of a computing mechanism, and

a series of selector rods connecting said typewriting mechanism with said computing mechanism so that actions of the latter may be controlled from the former, each of said selector rods including a wire bent and twisted intermediate its ends, so as to cross all of the other wires and thereby invert the order of succession of the rods at one end from that at the other end, and a sup porting block acting to guide and limit the movement of its wire.

39. The combination with a typewriting mechanism, of a computing mechanism, and a series of selector rods connecting said typewriting mechanism with said computing mechanism so that the actions of the one will be interdependent of the actions of the other, said rods being twisted intermediate their ends so as both to cross one another and thereby invert the order of succession of the rods at one end from that at the other end, and to clear one another during such crossing.

4:0. The combination with a series of computing wheels, of a gear for each of said computing wheels, a series of rack bars engaging said gears to rotate said computing wheels, a series of pins settable on each of said bars to determine the extent of movement thereof, setting elements for said pins located normally out of register with said pins so as to be free to play between the same, and shifting means for adjusting the position of said rack bars to bring said pins into effective register with said setting elements, while said rack bars remain in engagement with said gears.

4:1. The combination with a typewriting mechanism including a traveling carriage and tabulating mechanism for determining the position of said carriage including stops carried by said carriage, of computing mechanism, connections operative by said stops for controlling certain actions of said computing mechanism, and means actuated by said tabulating mechanism for preventing the operation of said connections by said stops during a tabulating action.

42. In a combined typewriting and computing machine, the combination with computing mechanism including a plurality of computing members, and typewriting mechanism including a carriage and numeral keys, of drivers, one driver individual to each computing member, there being lost motion between parts of said computing mechanism so that said drivers are normally in a position out of actual driving relation with their computing members, and means controlled from the typewriter carriage operating to take up said lost motion and to move said drivers to a position so that said numeral keys may determine the amount of driving action of said drivers.

48. In a combined typewriting and computing machine, the combination with computing mechanism including computing members, and typewriting mechanism including numeral keys and a carriage, of drivers for said computing members, a general operator for actuating said drivers to extents determined by the operation of said numeral keys, there being lost motion between parts of said computing mechanism so that said drivers are normally in a position out of actual driving relation with said computing members, and means controlled from the typewriter carriage to take up said lost motion and to move said drivers independently of said general operator to a position so that the keys may determine the amount of driving action by said general operator.

4a. In a combined typewriting and computing machine, the combination with computing mechanism including computing members, and typewriting mechanism including numeral keys, of drivers for said computing members, there being lost motion between parts of said computing mechanism so that said drivers are normally in a position out of actual driving relation with said computing members, and denominational members acting to operate said drivers to take up said lost motion and to move said drivers into position to be controlled by said numeral keys.

45. In a combined typewriting and computing machine, the combination with computing mechanism including computing members, and typewriting mechanism including numeral keys, of drivers for said computing members, a general operator for actuating said drivers to extents determined by the operation of said numeral keys, there being lost motion between parts of said computing mechanism so that said drivers are normally in a position out of actual driving relation with said computing members, and denominational members to operate said drivers to take up said lost motion and to move said drivers independently of said general operator into position to be controlled as to their extents of movement by said numeral keys.

46. The combination with a traveling carriage, of tabulating mechanism for said carriage, computing mechanism, and demoninational selecting devices for said computing mechanism engageable by a part of said tabulating mechanism.

47. The combination with a traveling carriage, of tabulating mechanism for said carriage, computing mechanism, denominational selecting mechanism for said comput ing mechanism engageable by a part of said tabulating mechanism, and silencing means operated from another part of said tabulating mechanism for disabling said denioninational selecting mechanism.

as. The combination with a series of computing wheels, of a. series of denominational members for said emnputing wheels, normally passively positioned, a series oi lectors, one for each of said denominatiomll members, and connected to shift said de nominational members in the direction Off their length, to bring the same into play, and a traveling carriage for operating said selectors individually.

49. The combination with a series oil computing wheels, of a series of denominationa l members for said computing wheels normally passively positioned, a series of selectors, one for each of said denominational members, and connected to shift said denominational members in the direction oi? their length, to bring the same into play, and a traveling carriage for operating said selectors individually, the ends of said solectors being inverted in order to enable the travel of the carriage to take place from right to left to actuate said denominational members in order from left to right.

50. The combinationwith a series of computing wheels, of a series of denominational members, one individual to each of said computing wheels, and connected to determine the extent of rotation thereof, a series of levers for shifting said denominational members in the direction of their length, and a series of selectors for rocking said levers individually.

51. The combination with a series of computing wheels, of a series of driving members for rotating said computing wheels, said driving members having a series of indexing devices thereon settable to determine the extent of movement thereof, setting mechanism for said indexing devices, said setting mechanism and said indexing de vices being normally in ineffective position with relation to each other, selecting mechanism for adjusting said driving members individually in the line of their drive to bring said indexing devices into effective position to said setting mechanism, and a lostmotion driving connection between said driving members and said computing wheels, to enable a relative idle movement between said driving members and said computing wheels while said driving members are being adjusted to enable the indexing devices thereon to be set.

52. The combination with a series of denominational members having a normal passive position, of spring means for yieldingly holding said denominational members in such normal passive position, adjusting means for shifting said denominational members slightly against the tension of said spring means, and operating mechanism for shifting said denominational members greatly, partially against the tension of said spring means and partially unopposed by said spring means, said spring means and said denominational members having abrupt surfaces engaging during the slight movement of said denominational members, and having slight bearing surfaces engaging during the major port-ion of said greater movement of said denominational members when driven by said operating mechanism.

53. The combination with a series of denominational members, of a series of selectors extending vertically and connected to actuate said denominational members, a support for said selectors, means for moving said support from under said selectors, and guiding means for said selectors limiting the up-and-down movement thereof, to maintain them in proper relation when said support is moved.

54. In a combined typewriting and computing machine, the combination with a traveling carriage and tabulating stops settable thereon, of tappets set-table interchangeably with said stops, selector bars operated by said tappets scm'atim, and means for moving said selector bars positively clear of said tappets.

55. In a combined typewriting and computing machine, the combination with a traveling carriage and tabulating stops settable thereon, of tappets settable interchangeably with said stops, selector bars operated by said tappets seriatz'm, means for moving said selector bars positively clear of said tappets, tabulating keys for positioning said carriage having counter-stops cooperating with said carriage'sto-ps, and means for so moving said selector bars whenever a tabulating key is operated.

56. In a combined typewriting and computing machine, the combination, with numeral keys and computing wheels; of rack bars in which numbers are temporarily registered by said keys; means settable on said rack bars to so register said numbers, said means normally being in a position in which the action of the numeral keys has no effect thereon; means for selectively shifting said rack bars to bring said settable means into subjective position with reference to said keys; a shoulder on each rack bar; spring means normally bearing against said shoulder to normally hold said rack bar in ineffective position; and a fiat surface on said rack bar on which said spring means rides idly while a number registered in said rack bars is being transferred to said computing wheels.

57 The combination, with a typewriting mechanism, including a traveling carriage and a tappet thereon; of computing mecha nism; denominational-selecting mechanism for said computing mechanism operable by said tappct; silencing means connected with said denominational-selecting mechanism to move the same to inefiective position with respect to said tappct; and a manually-operable device for actuating said silencing means.

58. The combination, with a typewriting mechanism, including a traveling carriage, a tappct thereon, and numeral keys; of computing mechanism; denominational-selecting mechanism for said computing mechanism operable by said tappct; silencing means connected with said denominationalselecting mechanism to render the same in effective for operation by said tappct; and a key, separate from said numeral keys, for actuating said silencing means.

59. In a combined typewriting and computing machine, the combination with com puting mechanism, and typewriting mechanism including a carriage, of connections from said typewriting mechanism to said computing mechanism including denominational members in the form of rods, said denominational members arranged to act as transposing devices whereby the order of the denominational selection of the computing mechanism will accord with the denominational position of the typewriter carriage.

60. In a combined typewriting and computing machine, the combination with computing mechanism including computing members, and typewriting mechanism including a carriage, of drivers for said computing members, bell cranks engaging said drivers, rods engaging said bell cranks, and means carried by the typewriter carriage for engaging said rods, to position the same to effect denominational selection.

61. In a combined typewriting and computing machine, the combination with computing mechanism including computing members, of sliding drivers for said computing members, typewriting mechanism including a carriage and numeral keys, denominational members for selecting the denomination of said computing members, and a device carried by said carriage which engages said denominational members and moves them to slide said drivers to position to be controlled by said numeral keys.

62. In a combined typewriting and computing machine, the combination of a frame supporting the typewriting mechanism and also supporting and guiding a part of the computing mechanism, a frame carrying other parts of said computing mechanism, and guiding members also carried by said typewriter frame, whereby the typewriter carriage may control the denominational selection of said computing mechanism solely by superposing said frames with respect to one another.

68. In a computing machine, the combination with computing mechanism including a computing member, of a driver for said computing member, a spring for normally maintaining said driver yieldingly in normal position, and a general operator for moving said driver to advance said computing member, said general operator returning said driver to a position Where said spring becomes effective to complete the return of said driver to normal position.

6%. In a computing machine, the combination with computing mechanism including computing members, of drivers for said computing members, numeral keys for controlling the extcnts of movement of said drivers, yielding means for normally holding said drivers out of position for coaction with said keys, denominational determining mechanism for initially moving selected drivers against said yielding means, to a position to enable said keys to determine the extents of movement of said drivers, and a general operator for actuating said drivers each to an extent determined by said keys, said general operator also acting to return all of said drive s to alinement in key-controlling position, said yielding means then acting to complete the return of said drivers to a normal position out of key-controlling position.

65. In. a computing machine, the combination with computing members, of numeral keys for controlling the extents of move ment of said members, drivers, one for each member, a general operator for actuating said drivers in one direction to the extents controlled by said keys, and also for returning said members, and means for selecting the denomination of the member to be c0ntrolled by said keys by a movement of any of said drivers, there being lost motion be tween said general operator and said drivers enabling an independent movement of any of said drivers to permit said denominational selection.

OSMOND 7. OLMSTED. lVitnesses M. 'lnoiims, 7M. T. MULLINs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

